MANILA— Several areas across Luzon and Mindanao may experience rains and thunderstorms on Monday due to the northeast monsoon and easterlies, with possible flash floods and landslides in areas expected to receive moderate to heavy rainfall, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said.

In its 4 a.m. weather bulletin, PAGASA said the northeast monsoon is affecting Northern and Central Luzon, while easterlies are influencing the rest of the country.

Cloudy skies with scattered rains and thunderstorms are expected over Caraga, Camarines Norte, Camarines Sur, Catanduanes, Albay, Sorsogon, Davao Oriental, and Davao Occidental due to the easterlies.

The weather bureau warned of possible flash floods or landslides in these areas because of moderate to occasionally heavy rainfall.

Meanwhile, Cagayan, Isabela, Quirino, Apayao, Kalinga, Mountain Province, Ifugao, Aurora, and Quezon will experience cloudy skies with rains due to the northeast monsoon, with similar flood and landslide risks.

Metro Manila, the Ilocos Region, the rest of the Cordillera Administrative Region, the rest of Cagayan Valley, the rest of Central Luzon, and the rest of CALABARZON will have partly cloudy to cloudy skies with isolated light rains. No significant weather impacts are expected in these areas.

The rest of the country will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms, which may trigger flash floods or landslides during severe thunderstorms.

PAGASA also reported that Typhoon Cempaka (international name 2632) was outside the Philippine Area of Responsibility as of 3 a.m. Monday.

The tropical cyclone was located 1,440 kilometers east-northeast of extreme Northern Luzon, with maximum sustained winds of 120 kilometers per hour near its center and gusts of up to 150 kph. It was moving west-northwestward at 15 kph.

For coastal conditions, moderate to strong northeast winds will prevail over Northern Luzon, with waves reaching 2.1 to 3.7 meters.

The eastern sections of Central and Southern Luzon will also experience moderate to strong northeast winds and moderate to rough coastal waters, with wave heights ranging from 1.5 to 3.4 meters.

Visayas and the rest of Luzon will have light to moderate northeast winds, with coastal waters ranging from slight to moderate at 0.6 to 2.5 meters.

Mindanao will experience light to moderate east to northeast winds, with waves reaching 0.6 to 2.1 meters.

PAGASA recorded a minimum temperature of 22.8 degrees Celsius and a maximum of 33.7 degrees Celsius during the 24-hour period ending 8 p.m. Sunday.

The highest relative humidity was 92 percent, while the lowest was 43 percent.

In Metro Manila, sunrise is expected at 5:54 a.m. and sunset at 5:25 p.m. Monday. The moon is expected to rise at 5:38 a.m. and set at 5:14 p.m., with zero percent illumination.